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Message

Re: Creating Alesis Quadrasynth patch with bcman: Need Help.

2008-11-27 by Nibardo

--- In bc2000@yahoogroups.com, "Josh" <joshgaines@...> wrote:
>
> So I'm in the process of creating a pretty fully implemented patch
> (set of them actually... ) for alesis quadrasynths (i'm using a 
QSR)
> and ran into a few issues with offsets in sysex messages. 
> 
> I've been using the alesis sysex doc (which is very comprehensive, 
but
> wrong about a few things... go figure...) from their website. I've
> been figuring out the commands by watching the output from a 
software
> qsr editor that i know works.
> 
> A basic program parameter changenlooks like this:
> 
> <header 6bytes><mode/function><sound/page><channel/pot><val><F7>
> 
> So for a filter freq change i've got this on a rotary controller:
> 
> $F0 $00 $00 $0E $0E $10 $44 $00 $07 val $F7
> 
> and it works like a charm.
> 
> Now, when I read the output of another parameter change (Vel>Filt)
> from the software editor I get <06> in the 9th byte but then it
> changes to <07> mid-way through a revolution of the slider in the
> software. I know this has something to do with an offset b/c in the
> sysex doc from alesis this parameter shows up as having an offset 
of
> -99 (the filt freq example above showed an offset of 0). My 
problem is
> I have no clue what the offset means, or how to use it to program a
> single rotary controller in bcman to adjust this parameter fully.
> 
> I'd love some help. This is taking a lot of work and when its done
> I'll post the whole thing here for everyone. No more quadrasynth
> menus! I just gotta get over this hump.
>

Josh, you are doing a great job. I'm waiting this template, cause i 
have a QSR too. Don't know nothing about Syxex commands, so just my 
moral support for you.
Thanks for this
Cheers

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